7. Last week Phil took part in a spelling competition and won first prize. in Phil won first prize in a spelling ________________________________________ part last week. 8. That house will be the head office. It is being built. which That house, _____________________________________________________be the head office. 2 9. This exam is very important. It categorizes the level of each student. the This exam,________________________________________________student, is very important. 10. Internet is harmful for children's health. This is proved by scientists. which Internet is harmful______________________________________________ proved by scientists.